Add Slava's file

[Slava142]

:)

[github-learning-lab]

I was expecting your file to be named _posts/0000-01-02-Slava142.md.

Let's edit this pull request to fix both of these issues.

⌨️ Activity: Fixing your pull request

1. Click the Files Changed tab in this pull request
2. Verify that the only file edited is named _posts/0000-01-02-Slava142.md.
3. If the file is improperly named, or not in an improper location, click on the pencil icon found on the right side of the screen to edit it.
4. Above the contents of the file, select all text in the field that contains the filename and delete it.
5. Continue pressing your backspace key to also delete any directory names that exist.
6. Type the proper filename:

   _posts/0000-01-02-Slava142.md

7. Scroll to the bottom and enter a commit message and commit in the Commit Changes section.

If you would like assistance troubleshooting the issue you are encountering, create a post on the GitHub Community board. You might also want to search for your issue to see if other people have resolved it in the past.

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I'll respond below when I detect a commit on this branch.